Siemens 6EP1337-3BA00 SITOP PSU100M Industrial Power Supply

Overview

The Siemens 6EP1337-3BA00 SITOP PSU100M is a high-capacity industrial switching power supply engineered for control cabinets with heavy 24 V DC load requirements. As part of the SITOP Modular family, it delivers a stable 24 V output at up to 40 A, supporting centralized power architectures for PLC systems, distributed I/O, and field devices.
This unit is designed for long service life, high electrical robustness, and reliable operation under fluctuating mains conditions.

Electrical Performance

The 6EP1337-3BA00 supports both low- and high-voltage AC networks, making it suitable for global installations. It provides strong overload handling and fast recovery, ensuring uninterrupted DC supply during peak load conditions.

Key electrical characteristics include:

• Nominal output: 24 V DC, adjustable up to 28.8 V
• Continuous output current: 40 A
• Rated output power: 960 W
• AC input: single-phase or two-phase operation
• Input voltage ranges:
  • 85–132 V AC
  • 176–264 V AC
• Mains frequency: 47–63 Hz
• Typical efficiency: approximately 88%
• Power buffering: minimum 20 ms at rated load (230 V AC)
• High transient voltage withstand capability for industrial grids

Protection & Reliability

Designed for demanding automation environments, the 6EP1337-3BA00 integrates multiple protection mechanisms to safeguard connected loads and ensure safe system behavior:

• Electronic short-circuit protection
• Automatic overload limitation with restart
• Output overvoltage protection
• Thermal monitoring with safe shutdown
• SELV-compliant 24 V DC output

These features make the power supply suitable for continuous operation in mission-critical control systems.

Mechanical & Environmental Characteristics

The power supply is optimized for control cabinet integration and passive cooling, reducing maintenance requirements and improving overall system reliability.

Mechanical data:

• Mounting method: DIN rail
• Degree of protection: IP20
• Cooling concept: natural convection
• Housing width: approximately 240 mm
• Dimensions: 240 × 125 × 125 mm
• ​Weight:  2.9 kg

Application Areas

The Siemens 6EP1337-3BA00 is commonly deployed in:

• SIMATIC S7 PLC power distribution
• Centralized 24 V DC power systems
• Industrial sensors and actuators
• Motion control and drive control cabinets
• Process automation and manufacturing lines

Product Lifecycle Information

This model is classified as a phase-out product. Siemens recommends the SITOP PSU8600 series, successor model 6EP3337-8SB00-0AY0, for new designs requiring advanced diagnostics and efficiency improvements.

FAQ

Can this power supply operate on both 120 V and 230 V AC systems?

Yes. The 6EP1337-3BA00 automatically supports wide-range AC input covering both 120 V and 230 V industrial networks.

Is the output voltage adjustable?

Yes. The output voltage can be fine-adjusted from 24 V up to 28.8 V DC to compensate for line losses.

Does it require forced ventilation?

No. The unit uses natural convection cooling and does not require fans under standard operating conditions.